JavaScript Developer Onsite in Olathe KS

At Hyfin, we’re more than just a rapidly growing technology company. We’re redefining how businesses collect payments. Our platform is a robust, contactless payment solution that enables businesses across industries to get paid faster and more efficiently than ever before. With features like Advanced Invoicing , text-to-pay and email delivery, QR code payments, payment links, subscription billing, card-on-file, and dual pricing, Hyfin empowers merchants to streamline invoicing, eliminate bottlenecks, and improve cash flow. We help automate accounts receivables with smart tools like automatic payment reminders, late fees, and early-pay discounts, making it easier forbusinesses to get paid on time while saving them effort. 85% of invoices sent through Hyfin are paid the same day.

Position Overview :

As a JavaScript Developer , you'll be instrumental in building and enhancing web applications that power these innovative payment experiences. Working with technologies like JavaScript (Svelte, Node.js), Uno CSS (Tailwind), MongoDB , and various third-party APIs, you'll help us deliver seamless functionality that drives client success and rapid growth.

What you build at Hyfin has a direct impact : giving businesses tools to automate accounts receivables and focus more on growth, not chasing payments.

If you are energetic, love solving problems, and want to be part of a team that supports one another, challenges each other to grow, and celebrates collective wins, we’d love to hear from you.

What you will do :

• Build responsive, scalable web applications using JavaScript frameworks.
• Develop backend functionality and logic supporting large-scale business workflows.
• Work with REST and third-party APIs to extend and enhance platform capabilities.
• Collaborate with external vendors to design and deploy integrated payment solutions.
• Create and optimize internal tools to improve efficiency, client onboarding, and configuration workflows.
• Participate in daily stand-ups, sprint planning, and release cycles.
• Manage development tasks using JIRA.

What you will need :

Above all, we’re looking for someone who thrives in a culture of collaboration, curiosity, and continuous improvement.

Benefits :